#include <stdio.h>

int main()
{
    int a[3][4] = {1,2,3,4,5,6,7,8,9,10,11,12};

    int *p = a[0];// p = &a[0][0]

    int **q = &p;

   // **q = a[0][0]

   //*q+1 <==> &a[0][1]

   // typeof(*q) ==> int*

   printf("%d\n", *(*q+1));// 
   printf("a[1][0] = %d\n", *(*q+4));//

   
}